<template>
  <div>
    <div class="search">
      <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音"/>
    </div>
    <div
      class="search-content"
      ref="search"
      v-show="keyword"
    >
      <ul>
        <li
          class="search-item border-bottom"
          v-for="item of list"
          :key="item.id"
          @click="handleCityClick(item.name)"
        >
          {{item.name}}
        </li>
        <li
          class="search-item border-bottom"
          v-show="hasNoData"
        >
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
  import Bscroll from 'better-scroll'
  import { mapMutations } from 'vuex'
  export default {
      name: 'CitySearch',
      props:{
        cities:Object
      },
      data (){
        return{
          keyword:'',
          list:[],
          timer:null
        }
      },
      computed:{
        hasNoData (){
          return !this.list.length
        }
      },
      watch:{
        keyword (){
          if(this.timer){
            clearTimeout(this.timer)
          }
          if(!this.keyword){
            this.list = []
            return
          }
          this.timer = setTimeout(()=>{
            const result = []
            for(let i in this.cities ){
              this.cities[i].forEach((value)=>{
                if(value.spell.indexOf(this.keyword)>-1||value.name.indexOf(this.keyword)>-1){
                  result.push(value)
                }
              })
            }
            this.list = result
          },100)
        }
      },
      methods:{
        handleCityClick(city){
          this.changeCity(city)
          this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
      },
      mounted (){
        this.scroll = new Bscroll(this.$refs.search)
      }
    }
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .search
    height :.72rem
    padding : 0 .1rem
    background :$bgColor
    .search-input
      box-sizing :border-box
      width :100%
      height :.62rem
      padding : 0 .1rem
      line-height :.62rem
      text-align :center
      border-radius :.06rem
      color :#666
  .search-content
    z-index :1
    overflow :hidden
    position :absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom :0
    background :#eee
    .search-item
      line-height :.62rem
      padding-left :.2rem
      background :#fff
      color :#666
</style>
